Advocate staff photo by HEATHER MCCLELLAND -- The head coach and the assistant coach of the St. Amant High School volleyball team are sisters. Photographed on Wednesday, Sept. 24, 2014 at St. Amant High.

Advocate staff photo by HEATHER MCCLELLAND -- The head coach and the assistant coach of the St. Amant High School volleyball team are sisters. Photographed on Wednesday, Sept. 24, 2014 at St. Amant High.

Advocate staff photo by HEATHER MCCLELLAND -- The head coach and the assistant coach of the St. Amant High School volleyball team are sisters. Photographed on Wednesday, Sept. 24, 2014 at St. Amant High.

Advocate staff photo by HEATHER MCCLELLAND -- The head coach and the assistant coach of the St. Amant High School volleyball team are sisters. Photographed on Wednesday, Sept. 24, 2014 at St. Amant High.

Advocate staff photo by HEATHER MCCLELLAND -- Five pairs of sister play on the St. Amant Gator volleyball team. Photographed on Wednesday, Sept. 24, 2014 at St. Amant High.

St. Amant — Sibling rivalry has come to the volleyball court in Gatorland.

St. Amant High School varsity volleyball coach Allison Leake knew when the teams were picked that she would have five sets of sisters on the school’s three — freshman, junior varsity and varsity — volleyball teams this season, but it wasn’t until the first game that she realized “that caused a whole new dynamic on the team.”

“With two sets of sisters on the court during the varsity games, I noticed the chemistry was off,” Leake said. “It took me a while to realize that it was a sister thing.”